Project 152: Phase 4 Solutions

To prepare for the Specialist External exam, each week Project152 will be presenting 5 new past questions for you to try.
If you stick with us and tune in every week, by the time the externals have rolled around, you will have attempted all 152 of the past questions from the QCAAs external exams.
Link to the week 5 questions (and all previous questions and solutions) can be found here: mathsvideosaus...
Do you want to help keep awesome things like this happening? Consider becoming a Patreon. For as little as $3 a month, you can keep all this happening.